John e



(No Model.)

J. E. SHERMAN.

VISE.

No. 500,039. Patented June 20, 1893.

UNITED STATES PATENT OFFICE.

JOHN E. SHERMAN, OF ATTLEBOROUGH, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOWILLARD ENGLEY, OF SAME PLACE.

VISE.

SPECIFICATION forming part of Letters Patent No. 500,039, dated June 20,1893.

Application filed December 29,1892. Serial No. 456,686. (No model.)

To all whom it may concern:

Be it known that I, JOHN E. SHERMAN, a citizen of the United States ofAmerica, residing at Attleborongh, in the county of Bristol and State ofMassachusetts, have invented certain new and useful Improvements inVises; and I do hereby declare the following to be a full, clear, andexact description of theinvention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to letters of reference markedthereon, which form a part of this specification.

This invention relates to improvements in hand Vises; the object of thesame being to provide a vise with a lever having a cam portion whichbears against one of the jaws of the vise and head of the bolt so thatthe jaws can be readily released or brought nearer together to moresecurely grasp an article placed between said jaws, the end of the leverextending down to provide an additional grasping portion which can beoperated by the fingers of the hand that holds the implement; and theinvention consists in the construction and combination of the parts, aswill be hereinafter fully set forth and particularly pointed out in theclaims.

In the accompanying drawings, forming part of this specification: Figure1 is a side elevation of a vise constructed in accordance with myimprovement. Fig. 2 is an edge View. Fig. 3 is a detail sectional view,taken through the lever and jaw adjacent thereto. Fig. 4 is a detailview of one of the jaws.

A and A designate the jaws of the vise, which are pivoted to each otherand provided with a separating spring a. These jaws are substantially ofordinary construction. One of the jaws, as A, has on its outer side andsurrounding the bolt aperture a flat surface against which the thumb-nutG which is screwed on the bolt bears. The other jaw, as A, is providedbeneath the head of the bolt and above and below the aperture withconvex portions which extend across the jaw, and on each side of theaperture said jaw is convexed as shown.

D designates the lever, which is apertured to fit over the bolt and isadapted to bear against the head of the same. The inner face of thislever is provided on each side of the bolt aperture with a concave e,which when the lever is turned at right angles with the jaw will fitover the convex portions of the same, and when said lever is turnedsubstantially parallel with the jaw the fiat surfaces of the lever aboveand below the bolt aperture will ride upon the convex portions of thejaw and force said jaw toward the other jaw. The lower end of the leverprojects beyond the ends of the jaws A and A and is curved to lit thehand, so that it may be 0perated by the fingers.

I am aware that prior to my invention it has been proposed to provide ahand vise with a lever having an inclined surface which bears against apin projecting from the head .of the bolt; also that it is common toprovide a bolt with a lever having an eccentric end portion, said leverbeing pivoted to the bolt so as to bear upon one of the jaws of thevise; and I do not claim such construction, as with my improvement abolt of ordinary construction is used and the cam faces of the jaw andlever are plain surfaces which will not retain foreign substances whichcause undue wear.

Having thus described my invention, what I claim as new, and desire-tosecure by Letters Patent, is

1. A hand vise consisting of a pair of jaws, a bolt and nut for bindingthem together, one of said jaws, adjacent to the head of the bolt,having convex surfaces above and below the aperture through which thebolt passes, of a lever carried by the unthreaded portion of the bolt soas to contact with the head thereof, the opposite face of the leverhaving portions which contact with the convex surfaces of the jaw whenthe lever is turned, substantially as shown, and for the purpose setforth.

2. In a hand-vise, a movable lever D having an aperture through whichpasses the clamping-bolt B, said lever having adjacent 5 to the head ofthe bolt a plain face, the opposite face being provided transverselywith a concave recess, one of the jaws A of the vise having adjacent tothe bolt aperture convex surfaces which lie in or enter the recess inthe lever when said lever is turned substantially In testimony whereof Iaflix my signature in at right angles with the jaw, the parts beingpresence of two Witnesses.

organized and combined so that when the lever is positioned otherwisethan at right an- JOHN SHERMAN 5 gles with the jaw the clamping jaws ofthe Witnesses:

vise will be drawn toward each other, for the GEORGE A. ADAMS,

purpose set forth. FRED S. COBB.

